SUESPORT Hopper Ball Kit,Pump Included, 18in/45cm, Red, Hop Ball, Kangaroo Bouncer, Hoppity Hop, Sit and Bounce, Jumping Ball, 2-Size by 3-Colors Available Dynamic durability testing - No mutations occurs after 10,000 loading cycles of an elastic load of 70kgs (approx. 160LB), this is a destructive testing. Maximum sustainable weight of 160lbs/70kgs. We state 160LB instead of 500Lbs (Static pressure testing is 500Lbs) in the package box, to avoid extreme destructive testing or using by few customers. Static pressure testing -- No mutations occurs after time 1 hour under 250kgs pressure (approx 500Lbs). When shopping around for an hopper ball, note that what many of other companies balls are slim & light weight, indicative of inferior quality. The Hopper can be inflated with a regular hand pump. A 9-inch two-way action pump is included for FREE! Note: for optimal performance, it may be necessary to re-inflate your new Balance Ball once or twice after the initial inflation,to make PVC material gets fully stretched is the key. This SUESPORT Hopper Ball (also known as Kangaroo Bouncer, Hopping Ball, Hoppers Sit and Bounce, Jumping Ball) promotes coordination, balance, and core development skills.Suitable for indoor and outdoor use. Children's Favorite Playmate! Complies with ASTM F963-11/CPSIA Lead(Substrates),Phthalates & EU Toy Safety Standards EN 71.It contains no banned phthalates! Safe to play! 60-Day Money Back & 1 Year Warranty, if you are not happy within 60 days we will refund or replace the product.